Welded steel pipe specifications
Welded steel pipe is a steel pipe made by welding steel plates or strips after being curled and formed. It has a simple production process, high production efficiency, many varieties and specifications, and less equipment investment, but its general strength is lower than that of seamless steel pipes. In the production process of welded steel pipes of various specifications and sizes, welded steel pipe manufacturers conduct quality control on the steel pipe manufacturing and production process from materials, processes, welding, non-destructive testing, measurement, tooling and other links. So what are the commonly used specifications for welded steel pipes? Let’s introduce the specifications of welded steel pipes!
Welded steel pipe specifications
| Specification | Outer Diameter | Wall Thickness | Minimum Wall Thickness | Welded pipe (6 meters fixed length) | Galvanized pipe (6 meters fixed length) | |||
| Nominal inner diameter | Inches | mm | mm | mm | Meter weight kg | Root weight kg | Meter weight kg | Root weight kg |
| DN15 | 1/2 4分 | 21.3 | 2.8 | 2.45 | ||||
| DN20 | 3/4 六分 | 26.9 | 2.8 | 2.45 | 1.66 | 9.96 | 1.76 | 10.56 |
| DN25 | 1 | 33.7 | 3.2 | 2.8 | 2.41 | 14.46 | 2.554 | 15.32 |
| DN32 | 1.25 | 42.4 | 3.5 | 3.06 | 3.36 | 20.16 | 3.56 | 21.36 |
| DN40 | 1.5 | 48.3 | 3.5 | 3.06 | 3.87 | 23.22 | 4.1 | 24.6 |
| DN50 | 2 | 60.3 | 3.8 | 3.325 | 5.29 | 31.74 | 5.607 | 33.64 |
| DN65 | 2.5 | 76.1 | 4 | 3.5 | 7.11 | 42.66 | 7.536 | 45.21 |
| DN80 | 3 | 88.9 | 4 | 8.38 | 50.28 | 8.88 | 53.28 | |
| DN100 | 4 | 114.3 | 4 | 10.88 | 65.28 | 11.53 | 69.18 | |
| DN125 | 5 | 140 | 4.5 | 15.04 | 90.24 | 15.942 | 98.65 | |
| DN150 | 6 | 168.3 | 4.5 | 18.18 | 109.08 | 19.27 | 115.62 | |
| DN200 | 8 | 219.1 | 6.0(welded pipe) | 31.53 | 189.18 | |||
| DN200 | 8 | 219.1 | 6.5(hot dip galvanized) | 36.12 | 216 | |||